Yash Highvoltage: Maintenance of Transformer Bushings
To ensure the safe and dependable operation of transformer bushings over the duration of the transformer, routine maintenance is required. Transformer bushing maintenance includes visual examinations, electrical tests, and cleaning. The following are some essential transformer bushing maintenance tasks:
1. Visual Inspection: Transformer bushings should be visually inspected for any indications of corrosion or damage. The bushing flange, the mounting hardware, and the related electrical connections should all be inspected. Check the bushings for any indications of corrosion, leaks, or cracks.
2. Electrical Tests: The power frequency voltage withstand test, the capacitance and tan delta test, and the partial discharge test are among the electrical tests for transformer bushings. These tests are carried out to assess the bushings' insulating state and look for any indications of wear or electrical stress.
3. Cleaning: Transformer bushings should be cleaned on a regular basis to get rid of any dirt, dust, or moisture that may build up on their surface. Use a gentle cleaning solution that is suitable with the bushing materials and a delicate cloth or brush to perform the cleaning.
4. Repairs and Replacement: The bushings may need to be repaired or replaced if any deterioration or damage is found during the inspection or testing. While replacement may be required for significantly harmed or corroded bushings, repairs may involve replacing the flange or the mounting hardware.
5. Record Keeping: To keep track of the performance and maintenance history of transformer bushings, the maintenance records for those components should be kept current. The records should contain the date of the inspection, the results of the tests, the cost of any repairs or replacements, and any other pertinent data.
Overall, the maintenance of transformer bushings is critical in ensuring their safe and reliable operation. The maintenance tasks should be performed regularly and in accordance with the manufacturer's recommendations and relevant safety standards and regulations.
